The Korg Pitchblack was a little out of my price range, so the GA40 is working perfect for now.

The microphone works quite well for acoustic instruments.

2/10/2017This tuner no longer works :-(Failure started with on/off switch working erratically, finally the tuner could not be switched on at all

Well, it still is hard physical work to do the tuning, but getting the strings to perfect tune was so easy with the display

I use an Epiphone Les Paul Standard and this tuner works great with it

Works well but by no means as large a display as I hoped for, other wise it works very well.

This fine tuner works perfectly

Keep up the great work Korg.

It was easy and this worked perfectly.

This particular product works great, came ready to use

The Korg CA-40 Large Display Auto Chromatic Tuner works great.

Needle goes right up works great!!!

love it, tuner works great, very accurate.

The internal mic works just fine, making it the perfect choice for the novice or casual guitarist, but it also features an input for precise tunings.

Well, it still is hard physical work to do the tuning, but getting the strings to perfect tune was so easy with the display

I am a novice guitar player and this tuner works very well for me

Great tuner works well

The tuner worked very well and I liked the digital "needle" to help me visualize the notes.

Good service n tuner works great

good working,I,m happy